SCE PdCl 2 Bu 4 PBr Chit HAuCl 4 4H 2 O NaBH 4 PBS 0 1 mol /L ph mm μm mmol /L 100 mv 1 mmol /L HAuCl 4 4H 2

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1 4 2 2 Vol 42 No Journal of Shanghai Normal UniversityNatural Sciences Apr * 制备并表征了空壳钯纳米粒子, 将空壳钯纳米粒子和金纳米粒子修饰在玻碳电极 ( GC) 表面, 构建了新型的过氧化氢无酶传感器通过循环伏安等电化学方法研究了修饰电极的电化学特性, 结果表明 : Pd /AuNPs /GC 对过氧化氢 ( H 2 O 2 ) 的电极反应具有催化作用, 空壳钯和纳米金在催化过氧化氢还原过程中表现出了良好的协同作用过氧化氢的浓度在 2216 μmol /L( R = ) 范围内, 与修饰电极的电流之间呈现出良好的线性关系, 检测限为 0 2 μmol /L ( S /N = 3) 该传感器具有较好的稳定性重现性抗干扰性空壳钯 ; 协同作用 ; 修饰电极 ; 过氧化氢 O A Dong 5 Wang 6 ITO TEM CHI760C JEM *

2 SCE PdCl 2 Bu 4 PBr Chit HAuCl 4 4H 2 O NaBH 4 PBS 0 1 mol /L ph mm μm mmol /L 100 mv 1 mmol /L HAuCl 4 4H 2 O 0 2 mol /L Na 2 SO V 300 s AuNPs /GC 1 mg 1 ml 0 5% 1 h 6 μl AuNPs /GC Pd /AuNPs / GC TEM nm mmol /L K 3 FeCN 6 / K 4 FeCN mol /L KCl 2 GC 104 μa 187 μa 1 TEM AuNPs /GC 220 μa I p = AD 1 /2 n 3 /2 I p A cm 2 n D 6 70 ± cm 2 s - 1 c v 2 Pd /AuNPs /GC GC GCa AuNPs /GCb Pd /GCc Pd / AuNPs /GCd0 1 mol /L PBS ph = 7 2 H 2 O 2 3 H 2 O 2 GC AuNPs /GC Pd /GC Pd /AuNPs /GC V V agc baunps /GC cpd /AuNPs /GC 3 - /4-10 mmol /L FeCN mol /L KCl 100 mv /s 2

3 2 163 H 2 O 2 AuNPs /GC Pd /GC Pd /AuNPs /GC 3 b c H 2 O 2 AuNPs /GC Pd /GC Pd /AuNPs /GC H 2 O 2 23 H 2 O 2 H 2 O V 4 abare GC baunps /GC cpd /GC dpd / AuNPs /GC 100 mv /s H 2 O 2 H 2 O V H 2 O 2 H 2 O 2 4 H 2 O 2 Pd /AuNPs /GC s300 s 300 s 300 s 300 s V V V V V 2 5 Pd /AuNPs /GC 5A 0 1 mol L - 1 PBS ph = 7 2 H 2 O 2 Pd /AuNPs /GC V 5 H 2 O 2 2 s 5 H 2 O μmol /L H 2 O 2 I = c μmol /L3 2 6 H 2 O 2 2 μmol /L 0 1 mol PBS ph = mmol /L

4 μmol /L H 2 O 2 10 ml 0 1 mol /L PBSpH = RSD6 4% 3 H 2 O 2 3 RSD4 4% 4 PBS ph = % % 0 1 mol L - 1 PBS ph = V 5 H 2 O 2 Pd /AuNPs /GC μmol /L 1 96% 102 6% 1 n = 3 /μmol L - 1 /% /μmol L - 1 /μmol L - 1 /% Pd /AuNPs /GC H 2 O 2 1HOU M ZHAI Y M DONG S J Electrochemical sensing and biosensing platform based on chemically reduced graphene oxide J Anal Chem MATSUBARA C KAWAMOTO N TAKAMURA K Oxo tetra 4 - pyridylporphyrinatotitaniumiv an ultra - high sensitivity spectrophotometric reagent for hydrogen peroxide J Analyst HANAOKA S LIN J M YAMADA M Chemiluminescent flow sensor for H 2 O 2 based on the decomposition of H 2 O 2 catalyzed by cobaltii- ethanolamine complex immobilized on resin J Anal Chim Acta

5 LI J TAN S N GE H L Silica sol - gel immobilized amperometric biosensor for hydrogen peroxide J Anal Chim Acta JIA J B WANG B Q WU A G et al A Method to Construct a Third - Generation Horseradish Peroxidase BiosensorSelf - Assembling Gold Nanoparticles to Three - Dimensional Sol-Gel Network J Anal Chem WANG L WANG E K A novel hydrogen peroxide sensor based on horseradish peroxidase immobilized on colloidal Au modified ITO electrode J Electrochemistry Communications DANIEL M C ASTRUC D Gold nanoparticlesassembly supramolecular chemistry quantum - sized related properties and applications toward biology catalysis and nanotechnology J Chem Rev NARAYANAN R El - SAYED M A Raman studies on the interaction of the reactants with the platinum nanoparticles surface during the nanocatalyzed electron transfer reaction J J Phys Chem B MAHMOUND M A El - SAYED M A Reaction of platinum nanocatalyst with the ferricyanide reactant to produce Prussian blue analogue complexes J J Phys Chem C GUO S WEN D DONG S et al Gold nanowire assembling architecture for H 2 O 2 electrochemical sensor J Talanta KAFI A K M AHMADALINEZHAD AWANG J et al Direct growth of nanoporous Au and its application in electrochemical biosensing J Biosensors and Bioelectronics XIA P LIU H TIAN Y Cathodic detection of H 2 O 2 based on nanopyramidal gold surface with enhanced electron transfer of myoglobin J Biosensors and Bioelectronics DELVAUX M WALCARIUS A CHAMPAGNE S D Electrocatalytic H 2 O 2 amperometric detection using gold nanotube e- lectrode ensembles J Anal Chim Acta MADURAIVEERAN G RAMARAJ R Gold nanoparticles embedded in silica sol-gel matrix as an amperometric sensor for hydrogen peroxide J J Electroanal Chem LI H LIU J XIE S H et al Visicle - assisted assembly of mesoporous Ce - doped Pd nanospheres with a hollow chamber and enhanced catalytic efficiency J Adv Funct Mater Study of nonenzymatic H 2 O 2 sensor based on hollow palladium and Gold nanoparticles modified electrode GAN SiwenQI JunfeiXU QinghaoHUANG shansheng * College of Life and Environment Sciences Shanghai Normal University Shanghai China AbstractA novel nonenzymatic amperometric sensor based on hollow palladium and gold nanoparticles for detection of hydrogen peroxide H 2 O 2 was developed The modified electrode was prepared by electrodepositing gold nanoparticles AuNPsand then modifying the surface of the Au - glassy carbon electrode with hollow palladium The electrochemical characteristics of the mochifed electrode Pd /AuNPs /GCwere investigated by cyclic voltammetry The results showed that Pd /AuNPs /GC displayed high electrocatalytic activity towards the reduction of H 2 O 2 due to the good synergetic effect of hollow Pd and AuNPs on the reaction of H 2 O 2 The responding currents of the Pd /AuNPs /GC increased linearly with the concentration of H 2 O 2 in a wide range of μmol /L R = with a detection limit down to 0 2 μmol /L S /N = 3 The sensor also exhibited good anti - interference ability to electroactive molecules including uric acid ascorbic acid glucose and ethanol Key wordshollow palladiumsynergetic effectchemically modified electrodehydrogen peroxide ( 责任编辑 : 郁慧 )

6 PdNPs /MWNTs 595 Cr VI 1 1 1 CHI-660B SCE PS-20A JBZ- 12H Veeco Nano III a Multimode S-4800 FE-SEM Hitachi phs-3c ph 1 2 MWNTs 40 ~ 60 nm N-N DMF PB

6 PdNPs /MWNTs 595 Cr VI 1 1 1 CHI-660B SCE PS-20A JBZ- 12H Veeco Nano III a Multimode S-4800 FE-SEM Hitachi phs-3c ph 1 2 MWNTs 40 ~ 60 nm N-N DMF PB 4 3 6 Vol 43 No 6 2 0 1 4 1 2 Journal of Shanghai Normal University Natural Sciences Dec 2 0 1 4 DOI 10 3969 /J ISSN 1000-5137 2014 06 008 PdNPs / MWNTs 200234 用钯纳米粒子多壁碳纳米管修饰玻碳电极, 并用